So What Even Is Threat Modelling? A Practitioner's Guide
Threat modelling is frequently discussed as if it were a singular, monolithic exercise. In reality, applying a one-size-fits-all methodology across diverse engineering and cyber-physical boundaries usually results in misallocated resources, frustrated development teams, and defensive gaps that miss the operational reality of the architecture.
This guide serves as a practical manual mapping the distinct methodologies, taxonomies, and paradigms of threat modelling—contrasting asset-centric, software-centric, and attacker-oriented frameworks. By breaking down how different types of threat models serve specific design layers, it helps security practitioners navigate the landscape, select the right approach for their environment, and tailor the exercise to generate meaningful, testable engineering confidence.